[Massachusetts Amends Complaint to Accuse Kalshi of Targeting Users Under 21 with Sports Betting] According to Cointelegraph, the Massachusetts Attorney General has received court approval to file an amended complaint against the prediction market platform Kalshi, adding allegations that Kalshi has been "targeting users under 21" through social media and college campus marketing, while failing to take effective measures to prevent their use of the platform. Kalshi allows individuals aged 18 and older to create accounts and place bets on sports events. The case began in September 2025, with state authorities accusing Kalshi of offering sports betting in violation of state law. The CFTC previously filed a brief in Massachusetts asserting "exclusive jurisdiction" over prediction markets, with Chairman Michael Selig stating that "Congress has granted the CFTC sole authority to regulate the commodity derivatives market." Kalshi has not yet responded to requests for comment.